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Definition of Hydroid
1. Noun. Colonial coelenterates having the polyp phase dominant.
Exact synonyms: Hydrozoan
Generic synonyms: Cnidarian, Coelenterate
Specialized synonyms: Planula, Hydra, Siphonophore, Sertularian
Group relationships: Class Hydrozoa, Hydrozoa
Generic synonyms: Cnidarian, Coelenterate
Specialized synonyms: Planula, Hydra, Siphonophore, Sertularian
Group relationships: Class Hydrozoa, Hydrozoa
Definition of Hydroid
1. a. Related to, or resembling, the hydra; of or pertaining to the Hydroidea.
Definition of Hydroid
1. Noun. Any of many colonial coelenterates that exist mainly as a polyp; a hydrozoan ¹
2. Adjective. Of or pertaining to such creatures ¹
¹ Source: wiktionary.com
Definition of Hydroid
1. a polyp [n -S] - See also: polyp
Medical Definition of Hydroid
1.